Home / 91,983.48-137,859.80-39,331.16

Finding the Fourth Proportional to 91,983.48, 137,859.80 and 39,331.16

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Solution

The fourth proportional to 91,983.48, 137,859.80 and 39,331.16 is: 58,947.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,983.48 : 137,859.80 = 39,331.16 : x
  2. Step 2: Convert to fraction form
    91,983.48/137,859.80 = 39,331.16/x
  3. Step 3: Cross multiply
    91,983.48x = 137,859.80 × 39,331.16
  4. Step 4: Simplify right side
    91,983.48x = 5,422,185,851.37
  5. Step 5: Solve for x
    x = 5,422,185,851.37/91,983.48
  6. Step 6: Final answer
    x = 58,947.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.